Commit | Line | Data |
94b19069 |
1 | |
2 | package Class::MOP; |
3 | |
4 | use strict; |
5 | use warnings; |
6 | |
5a2932cf |
7 | use 5.008; |
8 | |
3cf322a0 |
9 | use MRO::Compat; |
10 | |
4c105333 |
11 | use Carp 'confess'; |
12 | use Scalar::Util 'weaken'; |
8b978dd5 |
13 | |
fc4f8f91 |
14 | |
0531f510 |
15 | use Class::MOP::Class; |
16 | use Class::MOP::Attribute; |
17 | use Class::MOP::Method; |
18 | |
19 | use Class::MOP::Immutable; |
20 | |
b1f5f41d |
21 | BEGIN { |
11b56828 |
22 | *IS_RUNNING_ON_5_10 = ($] < 5.009_005) |
23 | ? sub () { 0 } |
4c105333 |
24 | : sub () { 1 }; |
46b23b44 |
25 | |
9efe16ca |
26 | *HAVE_ISAREV = defined(&mro::get_isarev) |
27 | ? sub () { 1 } |
28 | : sub () { 1 }; |
3ecd1b25 |
29 | |
30 | # this is either part of core or set up appropriately by MRO::Compat |
31 | *check_package_cache_flag = \&mro::get_pkg_gen; |
b1f5f41d |
32 | } |
e0e4674a |
33 | |
c808e3d5 |
34 | our $VERSION = '0.67'; |
8a7085c1 |
35 | our $XS_VERSION = $VERSION; |
d519662a |
36 | $VERSION = eval $VERSION; |
fc4f8f91 |
37 | our $AUTHORITY = 'cpan:STEVAN'; |
38 | |
0531f510 |
39 | # after that everything is loaded, if we're allowed try to load faster XS |
40 | # versions of various things |
d7bda114 |
41 | _try_load_xs() or _load_pure_perl(); |
42 | |
43 | sub _try_load_xs { |
44 | return if $ENV{CLASS_MOP_NO_XS}; |
45 | |
0531f510 |
46 | my $e = do { |
47 | local $@; |
48 | eval { |
49 | require XSLoader; |
d7bda114 |
50 | # just doing this - no warnings 'redefine' - doesn't work |
51 | # for some reason |
52 | local $^W = 0; |
8a7085c1 |
53 | __PACKAGE__->XSLoader::load($XS_VERSION); |
3ecd1b25 |
54 | |
55 | require Sub::Name; |
56 | Sub::Name->import(qw(subname)); |
57 | |
58 | require Devel::GlobalDestruction; |
59 | Devel::GlobalDestruction->import("in_global_destruction"); |
0531f510 |
60 | }; |
61 | $@; |
62 | }; |
15273f3c |
63 | |
0531f510 |
64 | die $e if $e && $e !~ /object version|loadable object/; |
d7bda114 |
65 | |
66 | return $e ? 0 : 1; |
0531f510 |
67 | } |
15273f3c |
68 | |
d7bda114 |
69 | sub _load_pure_perl { |
70 | require Sub::Identify; |
71 | Sub::Identify->import('get_code_info'); |
3ecd1b25 |
72 | |
73 | *subname = sub { $_[1] }; |
74 | *in_global_destruction = sub () { !1 } |
d7bda114 |
75 | } |
76 | |
77 | |
be7677c7 |
78 | { |
79 | # Metaclasses are singletons, so we cache them here. |
80 | # there is no need to worry about destruction though |
81 | # because they should die only when the program dies. |
82 | # After all, do package definitions even get reaped? |
1d68af04 |
83 | my %METAS; |
84 | |
85 | # means of accessing all the metaclasses that have |
be7677c7 |
86 | # been initialized thus far (for mugwumps obj browser) |
1d68af04 |
87 | sub get_all_metaclasses { %METAS } |
88 | sub get_all_metaclass_instances { values %METAS } |
89 | sub get_all_metaclass_names { keys %METAS } |
be7677c7 |
90 | sub get_metaclass_by_name { $METAS{$_[0]} } |
1d68af04 |
91 | sub store_metaclass_by_name { $METAS{$_[0]} = $_[1] } |
92 | sub weaken_metaclass { weaken($METAS{$_[0]}) } |
be7677c7 |
93 | sub does_metaclass_exist { exists $METAS{$_[0]} && defined $METAS{$_[0]} } |
1d68af04 |
94 | sub remove_metaclass_by_name { $METAS{$_[0]} = undef } |
95 | |
be7677c7 |
96 | # NOTE: |
1d68af04 |
97 | # We only cache metaclasses, meaning instances of |
98 | # Class::MOP::Class. We do not cache instance of |
be7677c7 |
99 | # Class::MOP::Package or Class::MOP::Module. Mostly |
1d68af04 |
100 | # because I don't yet see a good reason to do so. |
be7677c7 |
101 | } |
102 | |
5a24cf8a |
103 | sub load_one_class_of { |
104 | use List::Util qw/first/; |
105 | my @classes = @_; |
106 | |
107 | foreach my $class (@classes) { |
108 | unless ( _is_valid_class_name($class) ) { |
109 | my $display = defined($class) ? $class : 'undef'; |
110 | confess "Invalid class name ($display)"; |
111 | } |
ab5e2f48 |
112 | } |
113 | |
5a24cf8a |
114 | my %exceptions; |
115 | my $name = first { |
116 | return $_ if is_class_loaded($_); |
07940968 |
117 | # require it |
5a24cf8a |
118 | my $file = $_ . '.pm'; |
a6844bfb |
119 | $file =~ s{::}{/}g; |
120 | my $e = do { local $@; eval { require($file) }; $@ }; |
5a24cf8a |
121 | if ($e) { |
122 | $exceptions{$_} = $e; |
123 | return; |
124 | } |
125 | else { |
126 | return $_; |
127 | } |
128 | } @classes; |
129 | |
130 | if ($name) { |
131 | return get_metaclass_by_name($name) || $name; |
07940968 |
132 | } |
133 | |
5a24cf8a |
134 | # Could load no classes. |
135 | confess join("\n", |
136 | map { sprintf("Could not load class (%s) because : %s", $_, $exceptions{$_}) } @classes |
137 | ) if keys %exceptions; |
138 | } |
139 | |
140 | sub load_class { |
141 | load_one_class_of($_[0]); |
448b6e55 |
142 | } |
143 | |
2c0fb064 |
144 | sub _is_valid_class_name { |
145 | my $class = shift; |
146 | |
147 | return 0 if ref($class); |
148 | return 0 unless defined($class); |
149 | return 0 unless length($class); |
150 | |
151 | return 1 if $class =~ /^\w+(?:::\w+)*$/; |
152 | |
153 | return 0; |
154 | } |
155 | |
448b6e55 |
156 | sub is_class_loaded { |
c1d5345a |
157 | my $class = shift; |
26fcef27 |
158 | |
159 | return 0 if ref($class) || !defined($class) || !length($class); |
160 | |
161 | # walk the symbol table tree to avoid autovififying |
162 | # \*{${main::}{"Foo::"}} == \*main::Foo:: |
163 | |
164 | my $pack = \*::; |
165 | foreach my $part (split('::', $class)) { |
166 | return 0 unless exists ${$$pack}{"${part}::"}; |
167 | $pack = \*{${$$pack}{"${part}::"}}; |
c1d5345a |
168 | } |
26fcef27 |
169 | |
170 | # check for $VERSION or @ISA |
171 | return 1 if exists ${$$pack}{VERSION} |
172 | && defined *{${$$pack}{VERSION}}{SCALAR}; |
173 | return 1 if exists ${$$pack}{ISA} |
174 | && defined *{${$$pack}{ISA}}{ARRAY}; |
175 | |
176 | # check for any method |
177 | foreach ( keys %{$$pack} ) { |
178 | next if substr($_, -2, 2) eq '::'; |
d5be3722 |
179 | |
180 | my $glob = ${$$pack}{$_} || next; |
181 | |
9e275e86 |
182 | # constant subs |
d5be3722 |
183 | if ( IS_RUNNING_ON_5_10 ) { |
184 | return 1 if ref $glob eq 'SCALAR'; |
185 | } |
186 | |
187 | return 1 if defined *{$glob}{CODE}; |
26fcef27 |
188 | } |
189 | |
190 | # fail |
c1d5345a |
191 | return 0; |
448b6e55 |
192 | } |
193 | |
194 | |
aa448b16 |
195 | ## ---------------------------------------------------------------------------- |
196 | ## Setting up our environment ... |
197 | ## ---------------------------------------------------------------------------- |
1d68af04 |
198 | ## Class::MOP needs to have a few things in the global perl environment so |
aa448b16 |
199 | ## that it can operate effectively. Those things are done here. |
200 | ## ---------------------------------------------------------------------------- |
201 | |
3bf7644b |
202 | # ... nothing yet actually ;) |
8b978dd5 |
203 | |
b51af7f9 |
204 | ## ---------------------------------------------------------------------------- |
1d68af04 |
205 | ## Bootstrapping |
b51af7f9 |
206 | ## ---------------------------------------------------------------------------- |
1d68af04 |
207 | ## The code below here is to bootstrap our MOP with itself. This is also |
b51af7f9 |
208 | ## sometimes called "tying the knot". By doing this, we make it much easier |
209 | ## to extend the MOP through subclassing and such since now you can use the |
1d68af04 |
210 | ## MOP itself to extend itself. |
211 | ## |
b51af7f9 |
212 | ## Yes, I know, thats weird and insane, but it's a good thing, trust me :) |
1d68af04 |
213 | ## ---------------------------------------------------------------------------- |
727919c5 |
214 | |
1d68af04 |
215 | # We need to add in the meta-attributes here so that |
216 | # any subclass of Class::MOP::* will be able to |
727919c5 |
217 | # inherit them using &construct_instance |
218 | |
f0480c45 |
219 | ## -------------------------------------------------------- |
6d5355c3 |
220 | ## Class::MOP::Package |
727919c5 |
221 | |
6d5355c3 |
222 | Class::MOP::Package->meta->add_attribute( |
8683db0e |
223 | Class::MOP::Attribute->new('package' => ( |
b880e0de |
224 | reader => { |
1d68af04 |
225 | # NOTE: we need to do this in order |
226 | # for the instance meta-object to |
b880e0de |
227 | # not fall into meta-circular death |
1d68af04 |
228 | # |
ce2ae40f |
229 | # we just alias the original method |
1d68af04 |
230 | # rather than re-produce it here |
ce2ae40f |
231 | 'name' => \&Class::MOP::Package::name |
b880e0de |
232 | }, |
727919c5 |
233 | )) |
234 | ); |
235 | |
a5e51f0b |
236 | Class::MOP::Package->meta->add_attribute( |
8683db0e |
237 | Class::MOP::Attribute->new('namespace' => ( |
a5e51f0b |
238 | reader => { |
56dcfc1a |
239 | # NOTE: |
ce2ae40f |
240 | # we just alias the original method |
241 | # rather than re-produce it here |
242 | 'namespace' => \&Class::MOP::Package::namespace |
a5e51f0b |
243 | }, |
2e877f58 |
244 | init_arg => undef, |
c4260b45 |
245 | default => sub { \undef } |
a5e51f0b |
246 | )) |
247 | ); |
248 | |
f0480c45 |
249 | ## -------------------------------------------------------- |
250 | ## Class::MOP::Module |
251 | |
252 | # NOTE: |
1d68af04 |
253 | # yeah this is kind of stretching things a bit, |
f0480c45 |
254 | # but truthfully the version should be an attribute |
1d68af04 |
255 | # of the Module, the weirdness comes from having to |
256 | # stick to Perl 5 convention and store it in the |
257 | # $VERSION package variable. Basically if you just |
258 | # squint at it, it will look how you want it to look. |
f0480c45 |
259 | # Either as a package variable, or as a attribute of |
260 | # the metaclass, isn't abstraction great :) |
261 | |
262 | Class::MOP::Module->meta->add_attribute( |
8683db0e |
263 | Class::MOP::Attribute->new('version' => ( |
f0480c45 |
264 | reader => { |
ce2ae40f |
265 | # NOTE: |
266 | # we just alias the original method |
1d68af04 |
267 | # rather than re-produce it here |
ce2ae40f |
268 | 'version' => \&Class::MOP::Module::version |
f0480c45 |
269 | }, |
2e877f58 |
270 | init_arg => undef, |
c4260b45 |
271 | default => sub { \undef } |
f0480c45 |
272 | )) |
273 | ); |
274 | |
275 | # NOTE: |
1d68af04 |
276 | # By following the same conventions as version here, |
277 | # we are opening up the possibility that people can |
278 | # use the $AUTHORITY in non-Class::MOP modules as |
279 | # well. |
f0480c45 |
280 | |
281 | Class::MOP::Module->meta->add_attribute( |
8683db0e |
282 | Class::MOP::Attribute->new('authority' => ( |
f0480c45 |
283 | reader => { |
ce2ae40f |
284 | # NOTE: |
285 | # we just alias the original method |
1d68af04 |
286 | # rather than re-produce it here |
ce2ae40f |
287 | 'authority' => \&Class::MOP::Module::authority |
1d68af04 |
288 | }, |
2e877f58 |
289 | init_arg => undef, |
c4260b45 |
290 | default => sub { \undef } |
f0480c45 |
291 | )) |
292 | ); |
293 | |
294 | ## -------------------------------------------------------- |
6d5355c3 |
295 | ## Class::MOP::Class |
296 | |
727919c5 |
297 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
298 | Class::MOP::Attribute->new('attributes' => ( |
f7259199 |
299 | reader => { |
1d68af04 |
300 | # NOTE: we need to do this in order |
301 | # for the instance meta-object to |
302 | # not fall into meta-circular death |
303 | # |
ce2ae40f |
304 | # we just alias the original method |
1d68af04 |
305 | # rather than re-produce it here |
ce2ae40f |
306 | 'get_attribute_map' => \&Class::MOP::Class::get_attribute_map |
f7259199 |
307 | }, |
727919c5 |
308 | default => sub { {} } |
309 | )) |
310 | ); |
311 | |
351bd7d4 |
312 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
313 | Class::MOP::Attribute->new('methods' => ( |
1d68af04 |
314 | reader => { |
ce2ae40f |
315 | # NOTE: |
316 | # we just alias the original method |
1d68af04 |
317 | # rather than re-produce it here |
ce2ae40f |
318 | 'get_method_map' => \&Class::MOP::Class::get_method_map |
92330ee2 |
319 | }, |
7855ddba |
320 | default => sub { {} } |
c4260b45 |
321 | )) |
322 | ); |
323 | |
324 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
325 | Class::MOP::Attribute->new('superclasses' => ( |
c23184fc |
326 | accessor => { |
327 | # NOTE: |
328 | # we just alias the original method |
1d68af04 |
329 | # rather than re-produce it here |
c23184fc |
330 | 'superclasses' => \&Class::MOP::Class::superclasses |
331 | }, |
2e877f58 |
332 | init_arg => undef, |
c23184fc |
333 | default => sub { \undef } |
334 | )) |
335 | ); |
336 | |
337 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
338 | Class::MOP::Attribute->new('attribute_metaclass' => ( |
1d68af04 |
339 | reader => { |
6d2118a4 |
340 | # NOTE: |
341 | # we just alias the original method |
1d68af04 |
342 | # rather than re-produce it here |
6d2118a4 |
343 | 'attribute_metaclass' => \&Class::MOP::Class::attribute_metaclass |
1d68af04 |
344 | }, |
351bd7d4 |
345 | default => 'Class::MOP::Attribute', |
346 | )) |
347 | ); |
348 | |
349 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
350 | Class::MOP::Attribute->new('method_metaclass' => ( |
1d68af04 |
351 | reader => { |
6d2118a4 |
352 | # NOTE: |
353 | # we just alias the original method |
1d68af04 |
354 | # rather than re-produce it here |
6d2118a4 |
355 | 'method_metaclass' => \&Class::MOP::Class::method_metaclass |
356 | }, |
1d68af04 |
357 | default => 'Class::MOP::Method', |
351bd7d4 |
358 | )) |
359 | ); |
360 | |
2bab2be6 |
361 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
362 | Class::MOP::Attribute->new('instance_metaclass' => ( |
b880e0de |
363 | reader => { |
1d68af04 |
364 | # NOTE: we need to do this in order |
365 | # for the instance meta-object to |
366 | # not fall into meta-circular death |
367 | # |
ce2ae40f |
368 | # we just alias the original method |
1d68af04 |
369 | # rather than re-produce it here |
ce2ae40f |
370 | 'instance_metaclass' => \&Class::MOP::Class::instance_metaclass |
b880e0de |
371 | }, |
1d68af04 |
372 | default => 'Class::MOP::Instance', |
2bab2be6 |
373 | )) |
374 | ); |
375 | |
9d6dce77 |
376 | # NOTE: |
1d68af04 |
377 | # we don't actually need to tie the knot with |
378 | # Class::MOP::Class here, it is actually handled |
379 | # within Class::MOP::Class itself in the |
380 | # construct_class_instance method. |
9d6dce77 |
381 | |
f0480c45 |
382 | ## -------------------------------------------------------- |
727919c5 |
383 | ## Class::MOP::Attribute |
384 | |
7b31baf4 |
385 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
386 | Class::MOP::Attribute->new('name' => ( |
c23184fc |
387 | reader => { |
1d68af04 |
388 | # NOTE: we need to do this in order |
389 | # for the instance meta-object to |
390 | # not fall into meta-circular death |
391 | # |
ce2ae40f |
392 | # we just alias the original method |
1d68af04 |
393 | # rather than re-produce it here |
ce2ae40f |
394 | 'name' => \&Class::MOP::Attribute::name |
b880e0de |
395 | } |
7b31baf4 |
396 | )) |
397 | ); |
398 | |
399 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
400 | Class::MOP::Attribute->new('associated_class' => ( |
c23184fc |
401 | reader => { |
1d68af04 |
402 | # NOTE: we need to do this in order |
403 | # for the instance meta-object to |
404 | # not fall into meta-circular death |
405 | # |
ce2ae40f |
406 | # we just alias the original method |
1d68af04 |
407 | # rather than re-produce it here |
ce2ae40f |
408 | 'associated_class' => \&Class::MOP::Attribute::associated_class |
b880e0de |
409 | } |
7b31baf4 |
410 | )) |
411 | ); |
412 | |
413 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
414 | Class::MOP::Attribute->new('accessor' => ( |
6d2118a4 |
415 | reader => { 'accessor' => \&Class::MOP::Attribute::accessor }, |
416 | predicate => { 'has_accessor' => \&Class::MOP::Attribute::has_accessor }, |
7b31baf4 |
417 | )) |
418 | ); |
419 | |
420 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
421 | Class::MOP::Attribute->new('reader' => ( |
6d2118a4 |
422 | reader => { 'reader' => \&Class::MOP::Attribute::reader }, |
423 | predicate => { 'has_reader' => \&Class::MOP::Attribute::has_reader }, |
7b31baf4 |
424 | )) |
425 | ); |
426 | |
427 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
428 | Class::MOP::Attribute->new('initializer' => ( |
8ee74136 |
429 | reader => { 'initializer' => \&Class::MOP::Attribute::initializer }, |
430 | predicate => { 'has_initializer' => \&Class::MOP::Attribute::has_initializer }, |
0ab65f99 |
431 | )) |
432 | ); |
433 | |
434 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
435 | Class::MOP::Attribute->new('writer' => ( |
6d2118a4 |
436 | reader => { 'writer' => \&Class::MOP::Attribute::writer }, |
437 | predicate => { 'has_writer' => \&Class::MOP::Attribute::has_writer }, |
7b31baf4 |
438 | )) |
439 | ); |
440 | |
441 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
442 | Class::MOP::Attribute->new('predicate' => ( |
6d2118a4 |
443 | reader => { 'predicate' => \&Class::MOP::Attribute::predicate }, |
444 | predicate => { 'has_predicate' => \&Class::MOP::Attribute::has_predicate }, |
7b31baf4 |
445 | )) |
446 | ); |
447 | |
448 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
449 | Class::MOP::Attribute->new('clearer' => ( |
6d2118a4 |
450 | reader => { 'clearer' => \&Class::MOP::Attribute::clearer }, |
451 | predicate => { 'has_clearer' => \&Class::MOP::Attribute::has_clearer }, |
7d28758b |
452 | )) |
453 | ); |
454 | |
455 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
456 | Class::MOP::Attribute->new('builder' => ( |
1d68af04 |
457 | reader => { 'builder' => \&Class::MOP::Attribute::builder }, |
458 | predicate => { 'has_builder' => \&Class::MOP::Attribute::has_builder }, |
459 | )) |
460 | ); |
461 | |
462 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
463 | Class::MOP::Attribute->new('init_arg' => ( |
6d2118a4 |
464 | reader => { 'init_arg' => \&Class::MOP::Attribute::init_arg }, |
465 | predicate => { 'has_init_arg' => \&Class::MOP::Attribute::has_init_arg }, |
7b31baf4 |
466 | )) |
467 | ); |
468 | |
469 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
470 | Class::MOP::Attribute->new('default' => ( |
7b31baf4 |
471 | # default has a custom 'reader' method ... |
1d68af04 |
472 | predicate => { 'has_default' => \&Class::MOP::Attribute::has_default }, |
7b31baf4 |
473 | )) |
474 | ); |
475 | |
3545c727 |
476 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
477 | Class::MOP::Attribute->new('associated_methods' => ( |
c23184fc |
478 | reader => { 'associated_methods' => \&Class::MOP::Attribute::associated_methods }, |
1d68af04 |
479 | default => sub { [] } |
3545c727 |
480 | )) |
481 | ); |
727919c5 |
482 | |
5659d76e |
483 | Class::MOP::Attribute->meta->add_method('clone' => sub { |
a740253a |
484 | my $self = shift; |
1d68af04 |
485 | $self->meta->clone_object($self, @_); |
727919c5 |
486 | }); |
487 | |
f0480c45 |
488 | ## -------------------------------------------------------- |
b6164407 |
489 | ## Class::MOP::Method |
b6164407 |
490 | Class::MOP::Method->meta->add_attribute( |
8683db0e |
491 | Class::MOP::Attribute->new('body' => ( |
c23184fc |
492 | reader => { 'body' => \&Class::MOP::Method::body }, |
b6164407 |
493 | )) |
494 | ); |
495 | |
4c105333 |
496 | Class::MOP::Method->meta->add_attribute( |
5e607260 |
497 | Class::MOP::Attribute->new('associated_metaclass' => ( |
5e607260 |
498 | reader => { 'associated_metaclass' => \&Class::MOP::Method::associated_metaclass }, |
499 | )) |
500 | ); |
501 | |
502 | Class::MOP::Method->meta->add_attribute( |
8683db0e |
503 | Class::MOP::Attribute->new('package_name' => ( |
4c105333 |
504 | reader => { 'package_name' => \&Class::MOP::Method::package_name }, |
505 | )) |
506 | ); |
507 | |
508 | Class::MOP::Method->meta->add_attribute( |
8683db0e |
509 | Class::MOP::Attribute->new('name' => ( |
4c105333 |
510 | reader => { 'name' => \&Class::MOP::Method::name }, |
511 | )) |
512 | ); |
513 | |
2226a8b0 |
514 | Class::MOP::Method->meta->add_attribute( |
515 | Class::MOP::Attribute->new('original_method' => ( |
516 | reader => { 'original_method' => \&Class::MOP::Method::original_method }, |
517 | writer => { '_set_original_method' => \&Class::MOP::Method::_set_original_method }, |
518 | )) |
519 | ); |
520 | |
4c105333 |
521 | Class::MOP::Method->meta->add_method('clone' => sub { |
522 | my $self = shift; |
2226a8b0 |
523 | my $clone = $self->meta->clone_object($self, @_); |
524 | $clone->_set_original_method($self); |
525 | return $clone; |
4c105333 |
526 | }); |
527 | |
b6164407 |
528 | ## -------------------------------------------------------- |
529 | ## Class::MOP::Method::Wrapped |
530 | |
531 | # NOTE: |
1d68af04 |
532 | # the way this item is initialized, this |
533 | # really does not follow the standard |
534 | # practices of attributes, but we put |
b6164407 |
535 | # it here for completeness |
536 | Class::MOP::Method::Wrapped->meta->add_attribute( |
8683db0e |
537 | Class::MOP::Attribute->new('modifier_table') |
b6164407 |
538 | ); |
539 | |
540 | ## -------------------------------------------------------- |
565f0cbb |
541 | ## Class::MOP::Method::Generated |
542 | |
543 | Class::MOP::Method::Generated->meta->add_attribute( |
8683db0e |
544 | Class::MOP::Attribute->new('is_inline' => ( |
565f0cbb |
545 | reader => { 'is_inline' => \&Class::MOP::Method::Generated::is_inline }, |
4c105333 |
546 | default => 0, |
1d68af04 |
547 | )) |
565f0cbb |
548 | ); |
549 | |
550 | ## -------------------------------------------------------- |
d90b42a6 |
551 | ## Class::MOP::Method::Accessor |
552 | |
553 | Class::MOP::Method::Accessor->meta->add_attribute( |
8683db0e |
554 | Class::MOP::Attribute->new('attribute' => ( |
1d68af04 |
555 | reader => { |
556 | 'associated_attribute' => \&Class::MOP::Method::Accessor::associated_attribute |
d90b42a6 |
557 | }, |
1d68af04 |
558 | )) |
d90b42a6 |
559 | ); |
560 | |
561 | Class::MOP::Method::Accessor->meta->add_attribute( |
8683db0e |
562 | Class::MOP::Attribute->new('accessor_type' => ( |
c23184fc |
563 | reader => { 'accessor_type' => \&Class::MOP::Method::Accessor::accessor_type }, |
1d68af04 |
564 | )) |
d90b42a6 |
565 | ); |
566 | |
d90b42a6 |
567 | ## -------------------------------------------------------- |
568 | ## Class::MOP::Method::Constructor |
569 | |
570 | Class::MOP::Method::Constructor->meta->add_attribute( |
8683db0e |
571 | Class::MOP::Attribute->new('options' => ( |
1d68af04 |
572 | reader => { |
573 | 'options' => \&Class::MOP::Method::Constructor::options |
d90b42a6 |
574 | }, |
4c105333 |
575 | default => sub { +{} } |
1d68af04 |
576 | )) |
d90b42a6 |
577 | ); |
578 | |
579 | Class::MOP::Method::Constructor->meta->add_attribute( |
8683db0e |
580 | Class::MOP::Attribute->new('associated_metaclass' => ( |
e8a38403 |
581 | init_arg => "metaclass", # FIXME alias and rename |
1d68af04 |
582 | reader => { |
583 | 'associated_metaclass' => \&Class::MOP::Method::Constructor::associated_metaclass |
584 | }, |
585 | )) |
d90b42a6 |
586 | ); |
587 | |
588 | ## -------------------------------------------------------- |
86482605 |
589 | ## Class::MOP::Instance |
590 | |
591 | # NOTE: |
1d68af04 |
592 | # these don't yet do much of anything, but are just |
86482605 |
593 | # included for completeness |
594 | |
595 | Class::MOP::Instance->meta->add_attribute( |
74890687 |
596 | Class::MOP::Attribute->new('associated_metaclass', |
597 | reader => { associated_metaclass => \&Class::MOP::Instance::associated_metaclass }, |
598 | ), |
86482605 |
599 | ); |
600 | |
601 | Class::MOP::Instance->meta->add_attribute( |
74890687 |
602 | Class::MOP::Attribute->new('_class_name', |
603 | init_arg => undef, |
604 | reader => { _class_name => \&Class::MOP::Instance::_class_name }, |
605 | #lazy => 1, # not yet supported by Class::MOP but out our version does it anyway |
606 | #default => sub { $_[0]->associated_metaclass->name }, |
607 | ), |
608 | ); |
609 | |
610 | Class::MOP::Instance->meta->add_attribute( |
611 | Class::MOP::Attribute->new('attributes', |
0b5d46da |
612 | reader => { attributes => \&Class::MOP::Instance::get_all_attributes }, |
74890687 |
613 | ), |
32bfc810 |
614 | ); |
615 | |
616 | Class::MOP::Instance->meta->add_attribute( |
74890687 |
617 | Class::MOP::Attribute->new('slots', |
618 | reader => { slots => \&Class::MOP::Instance::slots }, |
619 | ), |
86482605 |
620 | ); |
621 | |
63d08a9e |
622 | Class::MOP::Instance->meta->add_attribute( |
74890687 |
623 | Class::MOP::Attribute->new('slot_hash', |
624 | reader => { slot_hash => \&Class::MOP::Instance::slot_hash }, |
625 | ), |
63d08a9e |
626 | ); |
627 | |
628 | |
caa051fa |
629 | # we need the meta instance of the meta instance to be created now, in order |
630 | # for the constructor to be able to use it |
631 | Class::MOP::Instance->meta->get_meta_instance; |
632 | |
caa051fa |
633 | # pretend the add_method never happenned. it hasn't yet affected anything |
634 | undef Class::MOP::Instance->meta->{_package_cache_flag}; |
635 | |
86482605 |
636 | ## -------------------------------------------------------- |
f0480c45 |
637 | ## Now close all the Class::MOP::* classes |
4d47b77f |
638 | |
0b9372a2 |
639 | # NOTE: |
1d68af04 |
640 | # we don't need to inline the |
641 | # constructors or the accessors |
642 | # this only lengthens the compile |
643 | # time of the MOP, and gives us |
0b9372a2 |
644 | # no actual benefits. |
645 | |
646 | $_->meta->make_immutable( |
6c2f6b5c |
647 | inline_constructor => 1, |
648 | replace_constructor => 1, |
649 | constructor_name => "_new", |
45582002 |
650 | inline_accessors => 0, |
0b9372a2 |
651 | ) for qw/ |
1d68af04 |
652 | Class::MOP::Package |
653 | Class::MOP::Module |
654 | Class::MOP::Class |
655 | |
0b9372a2 |
656 | Class::MOP::Attribute |
1d68af04 |
657 | Class::MOP::Method |
658 | Class::MOP::Instance |
659 | |
660 | Class::MOP::Object |
0b9372a2 |
661 | |
565f0cbb |
662 | Class::MOP::Method::Generated |
1d68af04 |
663 | |
ba38bf08 |
664 | Class::MOP::Method::Accessor |
1d68af04 |
665 | Class::MOP::Method::Constructor |
666 | Class::MOP::Method::Wrapped |
0b9372a2 |
667 | /; |
b6164407 |
668 | |
94b19069 |
669 | 1; |
670 | |
671 | __END__ |
672 | |
673 | =pod |
674 | |
1d68af04 |
675 | =head1 NAME |
94b19069 |
676 | |
677 | Class::MOP - A Meta Object Protocol for Perl 5 |
678 | |
94b19069 |
679 | =head1 DESCRIPTON |
680 | |
127d39a7 |
681 | This module is a fully functioning meta object protocol for the |
1d68af04 |
682 | Perl 5 object system. It makes no attempt to change the behavior or |
683 | characteristics of the Perl 5 object system, only to create a |
27e31eaf |
684 | protocol for its manipulation and introspection. |
94b19069 |
685 | |
1d68af04 |
686 | That said, it does attempt to create the tools for building a rich |
687 | set of extensions to the Perl 5 object system. Every attempt has been |
688 | made for these tools to keep to the spirit of the Perl 5 object |
94b19069 |
689 | system that we all know and love. |
690 | |
1d68af04 |
691 | This documentation is admittedly sparse on details, as time permits |
692 | I will try to improve them. For now, I suggest looking at the items |
693 | listed in the L<SEE ALSO> section for more information. In particular |
694 | the book "The Art of the Meta Object Protocol" was very influential |
40483095 |
695 | in the development of this system. |
696 | |
bfe4d0fc |
697 | =head2 What is a Meta Object Protocol? |
698 | |
1d68af04 |
699 | A meta object protocol is an API to an object system. |
bfe4d0fc |
700 | |
1d68af04 |
701 | To be more specific, it is a set of abstractions of the components of |
702 | an object system (typically things like; classes, object, methods, |
703 | object attributes, etc.). These abstractions can then be used to both |
bfe4d0fc |
704 | inspect and manipulate the object system which they describe. |
705 | |
1d68af04 |
706 | It can be said that there are two MOPs for any object system; the |
707 | implicit MOP, and the explicit MOP. The implicit MOP handles things |
708 | like method dispatch or inheritance, which happen automatically as |
709 | part of how the object system works. The explicit MOP typically |
710 | handles the introspection/reflection features of the object system. |
711 | All object systems have implicit MOPs, without one, they would not |
712 | work. Explict MOPs however as less common, and depending on the |
713 | language can vary from restrictive (Reflection in Java or C#) to |
714 | wide open (CLOS is a perfect example). |
bfe4d0fc |
715 | |
e16da3e6 |
716 | =head2 Yet Another Class Builder!! Why? |
717 | |
1d68af04 |
718 | This is B<not> a class builder so much as it is a I<class builder |
719 | B<builder>>. My intent is that an end user does not use this module |
720 | directly, but instead this module is used by module authors to |
721 | build extensions and features onto the Perl 5 object system. |
e16da3e6 |
722 | |
94b19069 |
723 | =head2 Who is this module for? |
724 | |
1d68af04 |
725 | This module is specifically for anyone who has ever created or |
726 | wanted to create a module for the Class:: namespace. The tools which |
727 | this module will provide will hopefully make it easier to do more |
728 | complex things with Perl 5 classes by removing such barriers as |
729 | the need to hack the symbol tables, or understand the fine details |
730 | of method dispatch. |
94b19069 |
731 | |
bfe4d0fc |
732 | =head2 What changes do I have to make to use this module? |
733 | |
1d68af04 |
734 | This module was designed to be as unintrusive as possible. Many of |
735 | its features are accessible without B<any> change to your existsing |
736 | code at all. It is meant to be a compliment to your existing code and |
737 | not an intrusion on your code base. Unlike many other B<Class::> |
738 | modules, this module B<does not> require you subclass it, or even that |
739 | you C<use> it in within your module's package. |
bfe4d0fc |
740 | |
1d68af04 |
741 | The only features which requires additions to your code are the |
2eb717d5 |
742 | attribute handling and instance construction features, and these are |
1d68af04 |
743 | both completely optional features. The only reason for this is because |
744 | Perl 5's object system does not actually have these features built |
2eb717d5 |
745 | in. More information about this feature can be found below. |
bfe4d0fc |
746 | |
747 | =head2 A Note about Performance? |
748 | |
1d68af04 |
749 | It is a common misconception that explict MOPs are performance drains. |
750 | But this is not a universal truth at all, it is an side-effect of |
751 | specific implementations. For instance, using Java reflection is much |
752 | slower because the JVM cannot take advantage of any compiler |
753 | optimizations, and the JVM has to deal with much more runtime type |
754 | information as well. Reflection in C# is marginally better as it was |
755 | designed into the language and runtime (the CLR). In contrast, CLOS |
756 | (the Common Lisp Object System) was built to support an explicit MOP, |
757 | and so performance is tuned for it. |
758 | |
759 | This library in particular does it's absolute best to avoid putting |
760 | B<any> drain at all upon your code's performance. In fact, by itself |
761 | it does nothing to affect your existing code. So you only pay for |
2eb717d5 |
762 | what you actually use. |
bfe4d0fc |
763 | |
550d56db |
764 | =head2 About Metaclass compatibility |
765 | |
1d68af04 |
766 | This module makes sure that all metaclasses created are both upwards |
767 | and downwards compatible. The topic of metaclass compatibility is |
768 | highly esoteric and is something only encountered when doing deep and |
769 | involved metaclass hacking. There are two basic kinds of metaclass |
770 | incompatibility; upwards and downwards. |
550d56db |
771 | |
1d68af04 |
772 | Upwards metaclass compatibility means that the metaclass of a |
773 | given class is either the same as (or a subclass of) all of the |
550d56db |
774 | class's ancestors. |
775 | |
1d68af04 |
776 | Downward metaclass compatibility means that the metaclasses of a |
777 | given class's anscestors are all either the same as (or a subclass |
550d56db |
778 | of) that metaclass. |
779 | |
1d68af04 |
780 | Here is a diagram showing a set of two classes (C<A> and C<B>) and |
781 | two metaclasses (C<Meta::A> and C<Meta::B>) which have correct |
550d56db |
782 | metaclass compatibility both upwards and downwards. |
783 | |
784 | +---------+ +---------+ |
785 | | Meta::A |<----| Meta::B | <....... (instance of ) |
1d68af04 |
786 | +---------+ +---------+ <------- (inherits from) |
550d56db |
787 | ^ ^ |
788 | : : |
789 | +---------+ +---------+ |
790 | | A |<----| B | |
791 | +---------+ +---------+ |
792 | |
1d68af04 |
793 | As I said this is a highly esoteric topic and one you will only run |
794 | into if you do a lot of subclassing of B<Class::MOP::Class>. If you |
795 | are interested in why this is an issue see the paper |
796 | I<Uniform and safe metaclass composition> linked to in the |
550d56db |
797 | L<SEE ALSO> section of this document. |
798 | |
aa448b16 |
799 | =head2 Using custom metaclasses |
800 | |
1d68af04 |
801 | Always use the metaclass pragma when using a custom metaclass, this |
802 | will ensure the proper initialization order and not accidentely |
803 | create an incorrect type of metaclass for you. This is a very rare |
804 | problem, and one which can only occur if you are doing deep metaclass |
aa448b16 |
805 | programming. So in other words, don't worry about it. |
806 | |
94b19069 |
807 | =head1 PROTOCOLS |
808 | |
127d39a7 |
809 | The protocol is divided into 4 main sub-protocols: |
94b19069 |
810 | |
811 | =over 4 |
812 | |
813 | =item The Class protocol |
814 | |
1d68af04 |
815 | This provides a means of manipulating and introspecting a Perl 5 |
816 | class. It handles all of symbol table hacking for you, and provides |
94b19069 |
817 | a rich set of methods that go beyond simple package introspection. |
818 | |
552e3d24 |
819 | See L<Class::MOP::Class> for more details. |
820 | |
94b19069 |
821 | =item The Attribute protocol |
822 | |
1d68af04 |
823 | This provides a consistent represenation for an attribute of a |
824 | Perl 5 class. Since there are so many ways to create and handle |
127d39a7 |
825 | attributes in Perl 5 OO, this attempts to provide as much of a |
1d68af04 |
826 | unified approach as possible, while giving the freedom and |
94b19069 |
827 | flexibility to subclass for specialization. |
828 | |
552e3d24 |
829 | See L<Class::MOP::Attribute> for more details. |
830 | |
94b19069 |
831 | =item The Method protocol |
832 | |
1d68af04 |
833 | This provides a means of manipulating and introspecting methods in |
834 | the Perl 5 object system. As with attributes, there are many ways to |
835 | approach this topic, so we try to keep it pretty basic, while still |
94b19069 |
836 | making it possible to extend the system in many ways. |
837 | |
552e3d24 |
838 | See L<Class::MOP::Method> for more details. |
94b19069 |
839 | |
127d39a7 |
840 | =item The Instance protocol |
841 | |
842 | This provides a layer of abstraction for creating object instances. |
843 | Since the other layers use this protocol, it is relatively easy to |
844 | change the type of your instances from the default HASH ref to other |
845 | types of references. Several examples are provided in the F<examples/> |
846 | directory included in this distribution. |
847 | |
848 | See L<Class::MOP::Instance> for more details. |
849 | |
94b19069 |
850 | =back |
851 | |
be7677c7 |
852 | =head1 FUNCTIONS |
853 | |
c1d5345a |
854 | =head2 Constants |
855 | |
856 | =over 4 |
857 | |
858 | =item I<IS_RUNNING_ON_5_10> |
859 | |
860 | We set this constant depending on what version perl we are on, this |
861 | allows us to take advantage of new 5.10 features and stay backwards |
862 | compat. |
863 | |
9efe16ca |
864 | =item I<HAVE_ISAREV> |
865 | |
866 | Whether or not C<mro> provides C<get_isarev>, a much faster way to get all the |
867 | subclasses of a certain class. |
868 | |
c1d5345a |
869 | =back |
870 | |
448b6e55 |
871 | =head2 Utility functions |
872 | |
bd07fbdb |
873 | Note that these are all called as B<functions, not methods>. |
081a927b |
874 | |
448b6e55 |
875 | =over 4 |
876 | |
877 | =item B<load_class ($class_name)> |
878 | |
1d68af04 |
879 | This will load a given C<$class_name> and if it does not have an |
448b6e55 |
880 | already initialized metaclass, then it will intialize one for it. |
127d39a7 |
881 | This function can be used in place of tricks like |
882 | C<eval "use $module"> or using C<require>. |
448b6e55 |
883 | |
5a24cf8a |
884 | =item B<load_one_class_of ($class_name, [$class_name, ...])> |
885 | |
886 | This will attempt to load the list of classes given as parameters. |
887 | The first class successfully found or loaded will have it's metaclass |
888 | initialized (if needed) and returned. Subsequent classes to the first |
889 | loaded class will be ignored, and an exception will be thrown if none |
890 | of the supplied class names can be loaded. |
891 | |
448b6e55 |
892 | =item B<is_class_loaded ($class_name)> |
893 | |
1d68af04 |
894 | This will return a boolean depending on if the C<$class_name> has |
895 | been loaded. |
448b6e55 |
896 | |
1d68af04 |
897 | NOTE: This does a basic check of the symbol table to try and |
448b6e55 |
898 | determine as best it can if the C<$class_name> is loaded, it |
1d68af04 |
899 | is probably correct about 99% of the time. |
448b6e55 |
900 | |
b1f5f41d |
901 | =item B<check_package_cache_flag ($pkg)> |
e0e4674a |
902 | |
bd07fbdb |
903 | B<NOTE: DO NOT USE THIS FUNCTION, IT IS FOR INTERNAL USE ONLY!> |
904 | |
127d39a7 |
905 | This will return an integer that is managed by C<Class::MOP::Class> |
906 | to determine if a module's symbol table has been altered. |
907 | |
908 | In Perl 5.10 or greater, this flag is package specific. However in |
909 | versions prior to 5.10, this will use the C<PL_sub_generation> variable |
910 | which is not package specific. |
911 | |
e0e4674a |
912 | =item B<get_code_info ($code)> |
913 | |
bd07fbdb |
914 | B<NOTE: DO NOT USE THIS FUNCTION, IT IS FOR INTERNAL USE ONLY!> |
915 | |
127d39a7 |
916 | This function returns two values, the name of the package the C<$code> |
917 | is from and the name of the C<$code> itself. This is used by several |
918 | elements of the MOP to detemine where a given C<$code> reference is from. |
919 | |
4c105333 |
920 | =item B<subname ($name, $code)> |
921 | |
922 | B<NOTE: DO NOT USE THIS FUNCTION, IT IS FOR INTERNAL USE ONLY!> |
923 | |
924 | If possible, we will load the L<Sub::Name> module and this will function |
925 | as C<Sub::Name::subname> does, otherwise it will just return the C<$code> |
926 | argument. |
927 | |
6f49cf3f |
928 | =item B<in_global_destruction> |
929 | |
bd07fbdb |
930 | B<NOTE: DO NOT USE THIS FUNCTION, IT IS FOR INTERNAL USE ONLY!> |
931 | |
6f49cf3f |
932 | If L<Devel::GlobalDestruction> is available, this returns true under global |
933 | destruction. |
934 | |
935 | Otherwise it's a constant returning false. |
936 | |
448b6e55 |
937 | =back |
938 | |
939 | =head2 Metaclass cache functions |
940 | |
1d68af04 |
941 | Class::MOP holds a cache of metaclasses, the following are functions |
942 | (B<not methods>) which can be used to access that cache. It is not |
943 | recommended that you mess with this, bad things could happen. But if |
be7677c7 |
944 | you are brave and willing to risk it, go for it. |
945 | |
946 | =over 4 |
947 | |
948 | =item B<get_all_metaclasses> |
949 | |
1d68af04 |
950 | This will return an hash of all the metaclass instances that have |
951 | been cached by B<Class::MOP::Class> keyed by the package name. |
b9d9fc0b |
952 | |
be7677c7 |
953 | =item B<get_all_metaclass_instances> |
954 | |
1d68af04 |
955 | This will return an array of all the metaclass instances that have |
b9d9fc0b |
956 | been cached by B<Class::MOP::Class>. |
957 | |
be7677c7 |
958 | =item B<get_all_metaclass_names> |
959 | |
1d68af04 |
960 | This will return an array of all the metaclass names that have |
b9d9fc0b |
961 | been cached by B<Class::MOP::Class>. |
962 | |
be7677c7 |
963 | =item B<get_metaclass_by_name ($name)> |
964 | |
127d39a7 |
965 | This will return a cached B<Class::MOP::Class> instance of nothing |
966 | if no metaclass exist by that C<$name>. |
967 | |
be7677c7 |
968 | =item B<store_metaclass_by_name ($name, $meta)> |
969 | |
127d39a7 |
970 | This will store a metaclass in the cache at the supplied C<$key>. |
971 | |
be7677c7 |
972 | =item B<weaken_metaclass ($name)> |
973 | |
127d39a7 |
974 | In rare cases it is desireable to store a weakened reference in |
975 | the metaclass cache. This function will weaken the reference to |
976 | the metaclass stored in C<$name>. |
977 | |
be7677c7 |
978 | =item B<does_metaclass_exist ($name)> |
979 | |
127d39a7 |
980 | This will return true of there exists a metaclass stored in the |
981 | C<$name> key and return false otherwise. |
982 | |
be7677c7 |
983 | =item B<remove_metaclass_by_name ($name)> |
984 | |
127d39a7 |
985 | This will remove a the metaclass stored in the C<$name> key. |
986 | |
be7677c7 |
987 | =back |
988 | |
552e3d24 |
989 | =head1 SEE ALSO |
8b978dd5 |
990 | |
552e3d24 |
991 | =head2 Books |
8b978dd5 |
992 | |
1d68af04 |
993 | There are very few books out on Meta Object Protocols and Metaclasses |
994 | because it is such an esoteric topic. The following books are really |
995 | the only ones I have found. If you know of any more, B<I<please>> |
a2e85e6c |
996 | email me and let me know, I would love to hear about them. |
997 | |
8b978dd5 |
998 | =over 4 |
999 | |
552e3d24 |
1000 | =item "The Art of the Meta Object Protocol" |
8b978dd5 |
1001 | |
552e3d24 |
1002 | =item "Advances in Object-Oriented Metalevel Architecture and Reflection" |
8b978dd5 |
1003 | |
b51af7f9 |
1004 | =item "Putting MetaClasses to Work" |
1005 | |
a2e85e6c |
1006 | =item "Smalltalk: The Language" |
1007 | |
94b19069 |
1008 | =back |
1009 | |
550d56db |
1010 | =head2 Papers |
1011 | |
1012 | =over 4 |
1013 | |
1014 | =item Uniform and safe metaclass composition |
1015 | |
1d68af04 |
1016 | An excellent paper by the people who brought us the original Traits paper. |
1017 | This paper is on how Traits can be used to do safe metaclass composition, |
1018 | and offers an excellent introduction section which delves into the topic of |
550d56db |
1019 | metaclass compatibility. |
1020 | |
1021 | L<http://www.iam.unibe.ch/~scg/Archive/Papers/Duca05ySafeMetaclassTrait.pdf> |
1022 | |
1023 | =item Safe Metaclass Programming |
1024 | |
1d68af04 |
1025 | This paper seems to precede the above paper, and propose a mix-in based |
1026 | approach as opposed to the Traits based approach. Both papers have similar |
1027 | information on the metaclass compatibility problem space. |
550d56db |
1028 | |
1029 | L<http://citeseer.ist.psu.edu/37617.html> |
1030 | |
1031 | =back |
1032 | |
552e3d24 |
1033 | =head2 Prior Art |
8b978dd5 |
1034 | |
1035 | =over 4 |
1036 | |
7184ca14 |
1037 | =item The Perl 6 MetaModel work in the Pugs project |
8b978dd5 |
1038 | |
1039 | =over 4 |
1040 | |
552e3d24 |
1041 | =item L<http://svn.openfoundry.org/pugs/perl5/Perl6-MetaModel> |
8b978dd5 |
1042 | |
552e3d24 |
1043 | =item L<http://svn.openfoundry.org/pugs/perl5/Perl6-ObjectSpace> |
8b978dd5 |
1044 | |
1045 | =back |
1046 | |
94b19069 |
1047 | =back |
1048 | |
1d68af04 |
1049 | =head2 Articles |
f8dfcfb7 |
1050 | |
1051 | =over 4 |
1052 | |
1d68af04 |
1053 | =item CPAN Module Review of Class::MOP |
f8dfcfb7 |
1054 | |
1055 | L<http://www.oreillynet.com/onlamp/blog/2006/06/cpan_module_review_classmop.html> |
1056 | |
1057 | =back |
1058 | |
a2e85e6c |
1059 | =head1 SIMILAR MODULES |
1060 | |
1d68af04 |
1061 | As I have said above, this module is a class-builder-builder, so it is |
1062 | not the same thing as modules like L<Class::Accessor> and |
1063 | L<Class::MethodMaker>. That being said there are very few modules on CPAN |
1064 | with similar goals to this module. The one I have found which is most |
1065 | like this module is L<Class::Meta>, although it's philosophy and the MOP it |
1066 | creates are very different from this modules. |
94b19069 |
1067 | |
a2e85e6c |
1068 | =head1 BUGS |
1069 | |
1d68af04 |
1070 | All complex software has bugs lurking in it, and this module is no |
a2e85e6c |
1071 | exception. If you find a bug please either email me, or add the bug |
1072 | to cpan-RT. |
1073 | |
1074 | =head1 ACKNOWLEDGEMENTS |
1075 | |
1076 | =over 4 |
1077 | |
b9d9fc0b |
1078 | =item Rob Kinyon |
a2e85e6c |
1079 | |
1d68af04 |
1080 | Thanks to Rob for actually getting the development of this module kick-started. |
a2e85e6c |
1081 | |
1082 | =back |
1083 | |
1a09d9cc |
1084 | =head1 AUTHORS |
94b19069 |
1085 | |
a2e85e6c |
1086 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
552e3d24 |
1087 | |
9c8cda90 |
1088 | B<with contributions from:> |
1089 | |
1090 | Brandon (blblack) Black |
1091 | |
4f116037 |
1092 | Florian (rafl) Ragwitz |
1093 | |
9c8cda90 |
1094 | Guillermo (groditi) Roditi |
1095 | |
9195ddff |
1096 | Matt (mst) Trout |
1097 | |
9c8cda90 |
1098 | Rob (robkinyon) Kinyon |
1099 | |
1100 | Yuval (nothingmuch) Kogman |
1a09d9cc |
1101 | |
f430cfa4 |
1102 | Scott (konobi) McWhirter |
1103 | |
94b19069 |
1104 | =head1 COPYRIGHT AND LICENSE |
1105 | |
69e3ab0a |
1106 | Copyright 2006-2008 by Infinity Interactive, Inc. |
94b19069 |
1107 | |
1108 | L<http://www.iinteractive.com> |
1109 | |
1110 | This library is free software; you can redistribute it and/or modify |
1d68af04 |
1111 | it under the same terms as Perl itself. |
94b19069 |
1112 | |
1113 | =cut |